Circular-rib-knitting machine.



No. 649,243. Patented May 8, I900. -T HENRY. I CIRCULAR BIB KNITTINGMACHINE.

A aimion filed Nov. 15, 1899.)

(No Model.) I 2 Sheets-Sheet I.

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Patented May 8, 1900-.

T H E N RY.

(Application filed Nov. 15, 1899.

CIRCULAR RIB KNITTING MACHINE.-

(No Model.)

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THOMAS HENRY, OF MUNCIE, INDIANA.

CIRCULAR-RIB-KNITTING MACHINE.

srnclrrcnzrrolv forming part of Letters Patent No. 649, dated May 8,1900 I Application filed November 15, 1899. Serial No. 737,031. (Nomodel-l To all whom it may concern.-

Be it known that I, THOMAS HENRY, a citizen of the United States,residing at Muncie, in the county of Delaware'and State of Indiana, haveinvented a new and useful Improvement in Oircular-Rib-Knitting Machines,of which the following is a specification.

. The aim and purpose of my invention is to construct acircular-rib-knitting machine which will make vertical stripes of two ormore colors on the face of the material.

In the drawings I have shown sufficient parts of a circular-rib-knittingmachine to illustrate my invention. I also show my improvement on amachine wherein the camring for the cylinder and the cam-dial for thedial are stationary and the cylinder and dial revolve. While Ihave shownsuch a machine, it is obvious that I could apply my improvement tomachines with other mechanismssuch, for instance, those with stationarycylinder and dial and revolving cam-rings and cam-dials.

Like letters and figures of reference indicate corresponding parts inthe several views.

Figure l is a bottom plan View of the cam dial-"plate with the cylindercam-ring surrounding the same. Fig. 2 is a vertical central sectionthrough the cylinder cam-ring. Fig. 3 is a top plan view of the splitrising cam in the cam-ring. Fig. 4 is a side elevation of the same. Fig.5 is a section on the line 5 5, Fig. at. Fig. 6 is a cross-sectionthrough the stitch-cam. Figs. 7 and 8 are detail enlarged views of thenormal and shortbutt needles, respectively. Fig. 9 is a view, partly insection, showing'the parts assembled. Fig. 10 is a view showing thefabric manufactured with my improvement. Fig. 11 is a detail view of aportion of the dialplate, showing a modification of the arrangement ofthe cams, wherein the double rising and stitch cams are on the dialinstead of on the cylinder; and Fig. 12 is a detail view of a portion ofthe cylinder, showing the normal and float cam thereon instead of thedouble shown) carries the normal needles 0, Fig. 7, and the short-buttneedles D, Fig. 8.

The

nary stitch and blank cams G G.

needle D is not only provided with ashorter butt than the normal needle,but is also a fraction of an inch shorter, for a purpose hereinafterdescribed.

By referring to Fig. 1 it will be seen that I provide a dial-plate foran eight-feed machine, although it is evident that the feed could bevaried at pleasure. At the feed marked 1 the dial-plate is provided witha normal pushing-out cam E instead of the float-cam F shown at feed 2.These float and normal cams alternate around the dialplate. The plate isprovided with the ordi- The camring at feed 1 is provided with a normalrising cam H and a normal stitch-cam I. I mean by the word normal cam acam which is used in the ordinary circularu'ib-knitting machine. Thecam-ring at feed 2 is provided with a double or split rising cam K and adouble or split stitch-cam L. The split or double rising cam K isplainly shown in Figs. 3, 4, 5, and 9. This cam has its upper inner facecut away, forming the horizontal shoulder K. In the operation of themachine the short-butt needle D will not rise up over this cam, but willfloat and pass along this horizontal shoulder K, as plainly shown inFig. 9. The stitch-cam L has its lower face cut away, forming thehorizontal shoulder L, as shown in Fig. 6. The shoulders 011 the twocams are arranged on the same horizontal plane, as shown in Fig. 2, andthe short-butt needle after riding along the shoulder K will also rideunder the shoulder L, and will not pass under the stitch-cam with thelong-butt needles or rise with them.

In carrying out myinventionth'e parts are assembled in the usual way,and the cylinder equipped with the normal and short-butt needles G andD, while the dial is equipped with only the ordinary needles.

The operation of the machineis as follows: The cams on both thedial-plate and cylinder-ring are normal at feed 1, and a white thread istaken at this feed. As thesecams are all normal both the long and shortbutt needles will rise and take the thread. The short-butt needle beingalso shorter in length will take a much longer stitch at the stitchcamthan the long-butt needle; otherwise it would make a tight stitch orWale, as the short-butt needle only takes the thread at every otherfeed, as hereinafter described. The dial-needles take the white threadat feed 1, and at feed 2 the dial-plateis provided with the float-camsF, allowing the dial-needles to retain the thread taken at this feed andcast off at the next feed 3, which is provided with the normal camssimilar to feed 1. The rising cam on the cylinder-ring at feed 2,however, is a double cam K, which allows the short-butt needles to floatalong the shoulder K under the said feed and, therefore, they do nottake any thread at this feed. The stitch-cam at this feed is also adouble or split cam so that the short-butt needles will not be actuatedat this cam. At feed 2 a brown thread is fed, and the long butt needleswill take their regular course, rising and taking this brown thread andcasting off at the stitch-cam at this feed. As there is a float-cam indial-plate at feed 2, as before described, the dial-needles will retaintheir thread, allowing the long-butt needles in the cylinder-ring todraw much more extra thread than at carrier 1, therefore in casting offit covers the stitch or wale on face of the webbing, showing the coloredthread on the face of the webbing at the longbutt needles and throwingthe white to the hack of the webbing or, in other words, formin g atuck-stitch at the long-butt needles. As before described, theshort-butt needles not taking any yarn at feed 2, only taking the yarnat feeds 1 and 3, or at every other feed, will only show the threadwhich they take at these feeds on the face of the webbing at the saidfeeds. The dial-needles at feed 3 will also cast off the thread taken atfeed 1, and the thread taken at feed 2, therefore throwing the white tothe back and the color on the face. The operation of the needles at feed2 is plainly shown in Fig. 9.

Referring to Fig. 10, M designates the fabric, showing the coloredtuck-stitch M and the single white stitch M". \Vhile I have shown thefabric with every other stitch white to correspond with the arrangementof the cams in the cylinder, I do not desire to limit myself to thisdesign, as it is obvious that by simply changing the arrangements of thecams in the cylinder the style or design of the fabric will be changed;nor do I desire to limit myself to awhite and brown combination, as Ican change the color of the threads at will without departing from myinvention.

In Figs. 11 and 12 I show a modification of my invention, placing thesplit or double rising and stitch cams E and G, respectively, at feed 2on the dialplate, and at feed 2 on the cylinder-ring the normal andfioat cams L and K, respectively. At feed 1 I show all the cams on boththe cylinderring and dial-plate normal. In this modification theoperation is just reversed, throwing the design on the back of thewebbing or fabric instead of on the front, as before described.

I am aware that many minor changes can be made in the arrangement ofparts and 0011- struction without in the least departing from the natureand principles of my invention.

Having thus described my invention, what I- claim as new, and desire tosecure by Letters Patent, is-

1. In a knitting-machine, the combination with the needle-dial and theneedle-cylinder, of cam-carriers therefor, a double rising cam and acomplementary double stitch-cam on one carrier with two sets of needlescooperating therewith, one set having longer butts than the other set,and a complementary floatcam on the other cam-carrier.

2. In a knitting-machine, the combination with the needle-dial and theneedle-cylinder, of cam-carriers therefor, a double rising cam and acomplementary double stitch-cam on one carrier with two sets of needlescooperating therewith, one set having longer butts than the other set,the short-butt needles being shorter in length than the long-buttneedles, and a complementary float-cam on the other cam-carrier.

3. In a knitting-machine, the combination with the needle-dial and theneedle-cylinder, of cam-carriers therefor, a normal rising and normalstitch cam on one carrier and a complementary normal rising and normalstitch cam on the other carrier, a double rising and double stitch camon one carrier and a complementary float-cam on the other carrier, longand short butt needles, the short-butt needles being shorter in lengththan the longbutt needles, the said needles cooperating with the carrierhaving the double cams, and a set of normal needles cooperating with theother carrier.

In testimony whereof I have hereunto set my hand in the presence of twowitnesses.

THOMAS HENRY.

Witnesses:

O. C. PAVEY, WM. DU VAL BROWN.

